*{
	padding: 0;
	margin: 0;
}

html{
	font-size: 62.5%;
}

body{
	background: #F3F3F3;
	padding: 1rem 1rem 1rem 0rem;
	font-family:"微软雅黑";
}

@media screen and (min-width:320px) and (max-width:349px) {
	html{font-size:11px !important;}
}
@media screen and (min-width:350px) and (max-width:399px) {
	html{font-size:12px !important;}
}
@media screen and (min-width:400px) and (max-width:499px) {
	html{font-size:13px !important;}
}
@media screen and (min-width:500px) and (max-width:599px) {
	html{font-size:13px !important;}
}
@media screen and (min-width:600px) and (max-width:800px) {
	html{font-size:18px !important;}
}

ul,li{
	list-style: none;
}
.clear:after{
	content: "";
	display: block;
	clear: both;
}
.serve_list li{
	float: left;
	width: 33%;
	padding-left:1rem; 
}
.serve-content{
	position: relative;
	width: 100%;
	padding-top:1.5rem;
	height:9rem;
	margin-bottom:1.5rem;
	background-color: white;
	text-align: center;
}
.mask{
	position: absolute;
	width:100%;
	height: 100%;
	line-height:9rem;
	left:0;
	top:0;
	background:black;
	opacity: 0.4;
}
.mask_span{
	position: absolute;
	left:50%;
	top:50%;
	width: 100%;
	transform:translate3d(-50%,-50%,0);
	-webkit-transform:translate3d(-50%,-50%,0);
	color:white;
	font-size: 1.2rem;
}
.serve-content img{
	margin-bottom:0.5rem;
}
.serve-text{
	font-size: 1.2rem;
	color: #666666;
	letter-spacing: 0rem;
}
.serve_z img{
	width: 4rem;
	height: 4rem;
}